com.adobe.granite.rest.utils.URIUtils Maven / Gradle / Ivy
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* Copyright 2014 Adobe Systems Incorporated
* All Rights Reserved.
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* NOTICE: All information contained herein is, and remains
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package com.adobe.granite.rest.utils;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URLEncoder;
import org.apache.commons.lang.StringUtils;
import org.apache.sling.api.request.RequestPathInfo;
import com.adobe.granite.rest.Constants;
/**
* The {@code URIUtils} provides helper methods around working with URIs.
*/
public final class URIUtils {
private URIUtils() {
}
/**
* URL encodes a path, ensuring that any forward slashes remain unencoded.
* @param toEncode The path to be safely URL encoded.
* @return A URL-encoded version of the path.
*/
public static String urlEncodePath(String toEncode) {
try {
return URLEncoder.encode(toEncode, Constants.DEFAULT_CHARSET).replace("%2F", "/");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException("Unable to encode URL: default charset is unexpected", e);
}
}
/**
* Relativizes the specified {@code resourcePath} against
* {@code requestPathInfo}.
*
*
* @param requestPathInfo RequestPathInfo to relativize against
* @param resourcePath Resource path to relativize
* @return The resulting path
*/
public static String relativize(RequestPathInfo requestPathInfo, String resourcePath) {
if (requestPathInfo == null) {
throw new IllegalArgumentException("RequestPathInfo cannot be null");
}
if (resourcePath == null) {
throw new IllegalArgumentException("Resource URI cannot be null");
}
String requestPath = requestPathInfo.getResourcePath();
String uri = resourcePath;
// is same - return last segment
if ((requestPath).equals(resourcePath)) {
String lastSegment = resourcePath.substring(resourcePath.lastIndexOf("/")+1);
if (requestPathInfo.getSelectorString() != null) {
lastSegment += "." + requestPathInfo.getSelectorString();
}
return lastSegment;
}
// is parent - return parent segment with traversal operators
if (isParent(requestPath,resourcePath)) {
String pathTraversal = "";
String diff = requestPath.replaceFirst(resourcePath, "");
String lastSegment = resourcePath.substring(resourcePath.lastIndexOf("/")+1);
for (int i = 0; i < StringUtils.countMatches(diff, "/"); i++) {
pathTraversal += "../";
}
if (!pathTraversal.isEmpty()) {
return pathTraversal + lastSegment;
}
}
// is child - return last path segment + child path
URI base = URI.create(requestPath);
URI relative = base.relativize(URI.create(resourcePath));
if (!relative.toString().isEmpty()) {
if (relative.toString().equals(resourcePath)) {
return resourcePath;
}
String lastSegment = requestPath.substring(requestPath.lastIndexOf("/")+1);
uri = lastSegment + "/" + relative.toString();
}
return uri;
}
/**
* Checks if {@code resourcePath} is part of the {@code requestPath}.
*
* @param requestPath
* @param resourcePath
* @return
*/
private static boolean isParent(String requestPath, String resourcePath) {
int selectorIdx = requestPath.indexOf(".");
if (selectorIdx > -1) {
requestPath = requestPath.substring(0, selectorIdx);
}
boolean isIndexOf = requestPath.indexOf(resourcePath) > -1;
boolean isShorter = requestPath.length() > resourcePath.length();
return isIndexOf && isShorter;
}
}